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Net Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2015
Earnings Per Share [Abstract] |
Net Earnings Per Share | The calculations of net earnings per share – basic and net earnings per share – diluted were as follows:
| 3 Months Ended |  | 6 months ended
| June 30, |  | June 30,
| 2015 |  | 2014 |  | 2015 |  | 2014
Net earnings available to common shareholders | $ | 105.7 |  |  | $ | 109.8 |  |  | $ | 171.4 |  |  | $ | 179.9 |
Weighted-average common shares outstanding (in millions) |  |  |  |  |  |  |
Weighted-average common shares outstanding - basic | 78.3 |  |  | 79.9 |  |  | 78.5 |  |  | 79.9 |
Effect of dilutive securities - stock options | 0.6 |  |  | 0.7 |  |  | 0.6 |  |  | 0.7 |
Effect of other share-based awards | 0.4 |  |  | 0.8 |  |  | 0.4 |  |  | 0.8 |
Weighted-average common shares outstanding - diluted | 79.3 |  |  | 81.4 |  |  | 79.5 |  |  | 81.4 |
Net earnings per share - basic: | $ | 1.35 |  |  | $ | 1.37 |  |  | $ | 2.18 |  |  | $ | 2.25 |
Net earnings per share - diluted: | $ | 1.33 |  |  | $ | 1.35 |  |  | $ | 2.16 |  |  | $ | 2.21 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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